327 IAC 5-1.5-30 "Major discharger" defined

Sec. 30. "Major discharger" means any point source discharger designated as such annually by agreement between the commissioner and the U.S. EPA. Classification of a discharger as major generally involves consideration of factors relating to the significance of the discharge's impact on the environment, such as: (1) nature and quantity of pollutants discharged; (2) character and assimilative capacity of the receiving waters; (3) presence of toxic pollutants in the discharge; and (4) compliance history of the discharger.